Cities are the engines as well as the backbones of growth for the economy of every nation across the world. A large chunk of the world’s current population lives in urban areas and contributes a major share of the World’s GDP. With increas…

Water is a precious natural international resource that has almost a fixed quantum of availability. With continuous growth in the world’s population, per capita availability of utilizable water is decreasing every day. Continuous discharge…

Human beings transitioned from hunting to farming resulting in the Agrarian revolution. The first industrial revolution (1.0) began in the mid of 18th century. This was triggered by the invention of steam engine, railroads and mechanical p…